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3 years ago

Is baking bread a chemical or physical change? a Chemical b Physical c Neither

Chemistry

1 answer:

Anvisha [2.4K]3 years ago

6 0

It's both..they go through both Chemical and Physical changes.

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According to the kinetic theory, all matter is made of moving particles, which measurement of matter is directly proportional to

34kurt

Answer: Kelvin temperature of a substance

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3 years ago

If the volume occupied by 0.500 mol of nitrogen gas at 0°C is 11.2 L, then the volume occupied by 2.00 mol of nitrogen gas at th

Paraphin [41]

Avagadros law states that volume of gas is directly proportional to number of moles of gas at constant pressure and temperature.
$\frac{V1}{n1} = \frac{V2}{n2}$
where V -volume , n - number of moles
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
substituting these values in the equation
$\frac{11.2 L}{0.500 mol} = \frac{V}{2.00 mol}$
V = 44.8 L
answer is C. 44.8 L

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4 years ago

A 48.3 mL sample of gas in a cylinder is warmed from 22 °C to

goldenfox [79]

Answer:

58.94 mL

Explanation:

V1 = 48.3 mL V2 = v mL

T1 = 22 degree celsius OR 295 k T2 = 87 degree celsius OR 360 k

We will use the gas equation:

PV = nRT

Since the Pressure (p) , number of moles (n) and the universal gas constant(R) are all constants in this given scenario,

we can say that

V / T = k , (where k is a constant)

Since this is the first case,

V1 / T1 = k --------------------(1)

For case 2:

Since we have the same constants, the equation will be the same

V / T = k (where k is the same constant from before)

V2 / T2 = k (Since this is the second case) ------------------(2)

From (1) and (2):

V1 / T1 = V2 / T2

Now, replacing the variables with the given values

48.3 / 295 = v / 360

v = 48.3*360 / 295

v = 58.94 mL

Therefore, the final volume of the gas is 58.94 mL

4 0

3 years ago

Please help<br>Please help

deff fn [24]

A)3 bcuz paper filters are used to separate solids from liquids

b) 2 bcuz it is a process of separating a pure liquid from a mixture of other liquids.And it works when it has different boiling point

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3 years ago

Which type of plant would a gardener most likely plant in a shady area of

murzikaleks [220]

Answer:

A. Ferns

Explanation:

Explanation:

7 0

3 years ago

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